Automatic multiple-spindle chucking machine



ame m 1924.,

- 95945, 1.4.1. N. VAN HAMER-SVEL AUTOMATIC MULTIPLE SPINDLE CHUCK INGMACHI NE Filed Feb. 8, 1922' 15 Sheets-Sheet 1 June "10, 1924.

. J. J. N. VAN HAMERSVELD AUTOMATIC MULTIPLE SPINDLE CHUGKING MACHINE.FiledFeb. a, 1922 15 Sheets-sheet 5 lil -i106 2 1.150 7% wit me 10,1924.

J.; J.' N; VAN HAMERSVELD AUTOMATIC MULTIPLE SPINDLE CHUCKING MACHINEFiled Feb. 8, 192; '15-Shee ts-$heet 4 mm m 1924.

J. J, N. VAN HAMERSVELD AUTOMATIC MULTIPLE SPINDLE QHUCKING MACHINEFiled Feb. 8,

1922 15 Shets-Sheet 6 June 10 1924.

JLJ. N. VAN HAMERSVELD AUTOMATIC MULTIPIJE SPINDLE CHUCKING MACHINEFiled .Feb. s, 1922 15 Sheets-Sheet 7 June 10; 1924.

1,496,794! J. J. N. VAN HAMERSVELD AUTOMATIC MULTIPLE SPINDLE CHUCKINGMACHINE l5- Sheets-Sheet 8 lvrve -"nto 1&- W [m 4/ Filed Feb. 8, 1922June 10, 1924n v 3, 49,794 J. J. N. ,VAN HAMERSVELD AUTOMATIC MULTIPLIESPINDLE CHUCKING MACHINE Filed Fbi 8', 1923 15 Sheets-Sheet 9 W /VI-June 710 ,192 4. Wm

J. J. N. VAN HAMERSVELD AUTOMATIC MULTIPLIE SPINDLE cxwcxme MACHINEFiled Feb. 8 1922 -16 Sheets-Sheet 1Q Illl I llllllll v mu'Lim whim?! 1III mm l W I June 10, 1924 3,496,794

. J, J. N. VAN HAMERSVELD- AUTOMATIC MULTIPLE SPINDLE CHUCKING MACHINEFiled Feb. 8, 1922 15 Sheets-Sheet 11 June 10, 1924' lfi fifi J. J. N.VAN HAMERSVELD AUTOMATIC MULTIPUE SPINDLE CHUCKING MACHINE Filed Feb; 8,192' 15 Sheets-Sheet 12 Jame 10 1924.

1..1. N. VAN HAMERSVELD AUTOMATIC MULTIPLE SPINDLE CHUCKING MACHINE l5She'ets-5heet M' Filed F eb. 8, 1922 fld/ a wwa June 10', 192 1.

File d Feb. 8,

1922 15 Sheets-Sheet 15 mi 24% gamma Patented June 10, 1924,

U l '5 i;

JOHN J. N. vAN-HAMfiRsvmn, oroLEvELAnD, onto, assareuoa 'ro THE WARNERAND SWASEY COMIBANY, F CLEVELAND, OHIO, A CORPORATION OF OHIO.

Armour-Arid monrrrnn-srmnnn 'CHUCKING' MAoHiNE.

Application inea February 8', 1922. SerialNo. salami.

To all whom it may concern} Be it known that I, JOHN J. N. VAN HAMERSVELD, a citizen of the United States, residing at Cleveland, in thecounty of Guyahoga and State of Ohio, have invented a certain new anduseful Improvement in Automatic Multiple-Spindle Chucking Machines, ofwhich the following is a full,

clear, and exact description.v v

-This invention relates to an automatic multiple spindle chuckingmachine, and is an improvement over the constructions disclosed in myprior applications No. 424,139, filed November 1-5, 1920, andNo.437,436, filed January 15, 1921. The princlpal object of the presentinvention is to provide an eiiicient automatic multiple spindle chuckingmachine and one which is more satisfactory in construction and operationthan those which have been used or proposed heretofore.

More specifically considered, the invention aims to provide a'machine ofthis type having a capaoity'for the performance of many, f

preferably six working 'operations at the sametime, and to accomplishthis with a machine having a greater efficiency, covering a larger fieldof work, and having fewer parts and less complicated in design than riormachines having even less capacity. Still further the invention 'aims toprovide a machine of this-character having a great deal less height thanprior machines of this general type; which has a greater num -ber oftool heads with a less number of workingspindles; which has its workspindles arranged horizontally, rendering the machine more adaptable forcontinuous steady work and more suitable in many ways to the-workmen;which permits the use of pilot bars to steady the cutting tools; whichhas the ma jor portion of the operating mechanisms arranged'in the lowerpart of the machine and accessible for adjustment and repairs; which isrigid in construction and compact,. adapting it for convenient shipmentin assembled condition; hich is so constructed that the feed units forthe different working stations and the indexing unit are readilyaccessible;

which has provision for stopping the tool heads of any work stationdurin the cycle then releasesaid tool heads so that that part of thecycle normally performed at the station in question can becompletedbefore the indexing takes place; which has provision forimparting'relatively fast and relatively Slow movements to the toolheads so that rel atively rapid movements can be imparted to" the toolswhile they are approaching 'or receding from the work, andrelativelyslow cutting feeds with provision for' automatically effectinga change from relatively high to relatively low speeds or vice versa;which has animproved' and highly efiioient automatically operatedcontrol to regulate the starting and stopping of the work spindles,

movement of the toolheads and for the in-- dexing meehanism includingthe provision of means'wherein there may be continuous operation withregular repetitions of complete cycles of tool feeds at the differentstations and indexing, along with means'controllable by the operator forproviding against the possibility of indexing until the necessary workof removing a finished piece and applying a new piece at the loadingstation has been com leted.

The above an numerous other objects which will appear from the followingde scription are attained by my invention,

which may behere briefly summarized as consisting in certain noveldetails of con.-

struction, and combinations and arrange ments of parts which will bedescribed in the specification and pointed out in the appended claims.

Fig: 1 is a side elevation of an automatic multiple spindle chuckingmachine embodying my'invention; Fig. 2 1s a top plan view of the same;Fi 3,-is atop plan view of the machine wit the top cover and spindlecarrier removed, and with certain parts in section substantially alongthe line 33 of Fig. 5;'Fig. i is a sectional viewsub stantially alongthe line 44' of Fig.- 5; Fig. tially along the line 5-5 of Fig. 2; Fig.6 is a sectional view' alongthe irregular line elevation; Fig. 7 is asectional view substanting the upper part of the machine and showing the,major portion of. the feed mechanism in elevation, the parts shown'be-5 is a vertical sectional view substan- '66 of Fig. 5, showing the feeddrum in ing from thecenter of the machine tothe outside of one of thework stations; Fig.8

is a Sectional viewsubstantially along the line 8-8 of Fig. 6, with the.feed drum shown in elevation, also partly. along the,\

line 8f8'of 'F-ig. Fig. 9 is a sectional view' substantially along theirregular line 99 of Fig. 8, showing the-feed drum. in elevation; Fig.10 is .a horizontal sectional view substantially along the irregularline 10'10 of Fig. 8; Fig. .11 is a vertical sec-. tional viewshowing'particularly' the indexing mechanism,,the section being from thecenter. of, the machine out to the outer side of the loading station,the section being taken substantially along the irregular line 11 '11-of-Fig. -4; Fig. 12 is a'hor'izontal sectional view through. theindexing mechanism,j-the section being taken subT stantially along theirregular line 1212 of Fig. 11; Fig. 13 is a' vertical sectional view ofthe indexing mechanism, the section being taken substantially along theirregular 1ine.1313'of Fig. 12; Fig. 14- is a view-looking toward theunder side of a Geneva motion gear constituting a part of the indexingmechanism, a, portion.' being in' section along the line 14'14 of Fig.13; Fig. 15 is-aface view of a part of the operators controllingmechanism with an associated. arm in 'sectlon, substantial-ly along theline 1'5'15of Fig. 11 ;"Fig.

16 is-a plan view of the same, looking down from the line 1616 of Fig.11; Fig. 17 is a detail sectional view substantially along the line 1717 ofFig. 12,'showing particularly the manner of guiding the lower endof the spindle carrier lock bolt; Fig.- 18 is .tional view showing aportion of one of a sectional view substantially along the-line 18-18 ofFig. 8, showing a portion of the tool head contr olling means;'Fig. 19is a.

detail sectional view substantially along the line 19-19 of Fig. 3,showing particularly one bf the spindle carrier clamping. units; 1

Fig. 20 is a sectional view-substantially along the line 20 20 of Fig.11 showing a.

ortion of the operating means forthe in; sexing mechanism; Fig. 21 is aView partly; in section and-partly in, elevation, the section beingtaken substantially along the -line I 21 21 of. Fig.' 12; Fig. 22 is adetail'sec the workstations with they work spindle and chuck inoperativerelation thereto, this view showing a modification involving the use of:one ormore pilot bars to steady the 1 tool slide; and Fig. 23 is .asectional-'view.

, I substantially along the line 23-23 of Fig.

'By reference to Fig. '1 it will be observed that the machine occupiesvery little head room and that the over-all height of the machineissmallas.'compared with other multiple spindle chucking machineswhereinthe spindles and slides are vertically arranged. Likewise the "floorspace compares encloses the; feed and indexing units.

very favorably with. the floor space of" the =multiple spindle chuckingmachines of the type or design'just referred to. v I The base of myimproved machine is substantially annular and the' projected floor spaceissubstantially rectangular, due to the portions extending out atthework and loading stations, this being apparent from ...The machine initself includes a base- 10, designed torest on the flodr, and includinga pan' shaped peripheral portion. On

this base is mounted a main stationary 5 and removable doors :13normally covering or closing openingsin the -frame by which access maybe had tothe feed and indexing units, each being accessible from eitherside thereof, aswill be readily'apparent by refere'nce to Figs. 1 and 4.In Fig. 3 the cover 12 and the. parts which rotate Within .the c'overonthetop'ofthe' frame member 11, and consisting;of the spindle carrier andspindles are removed, this view therefore showing the shape bf the upperportion of the frame memberv 11..

' In thema'chine designed byx me and constituting the subject matter ofthis application, provision is made. for six tool holders,

all capable o f'simultaneous operation, but

thisis' accomplished with a design having only four workv spindles andthree work stations and one loading stati'on,this being accomplishedbyproviding two tool he'ads,'one for a drilling, boring or turningoperation and the other for a facing opera-tionat each work station,ever, that the number of WOrkstatiOnsand .the number of workspindl'esmaybe; in

creased or decreased, and thatl am'not to beconfined toj'thre'e workstations and four splndleslherein shown.

by the reference letter L.

It is to be understood how- N In thedrawing ll .have designated the workstations bythe referenceletter'VV, and the loading station 'By.referencetoFig. 2 it will be observe -120.

that the three work stations and theloading 1 5 station are spaced equaldistances 1 a art] around the frame m'embe'rlLthese stations" thereforehaving an angular spacing 0t 90 .12" In Fig. 1 the loading station is attl'lQ'CQIi-ii r. facing the observer,-.and two of the three 1 workstations are seen at'opposite ends of the figure, while in Fig; 5areshown one work station and the loading station.

I "By reference particularlyto Figs. 1, 2 and W the frame member 11 hasa laterally pro- 5 it will seen that at'each work station jecting slidesupport 14- on which is mounted a horizontally and radially movableslide 15 .carrying a'tool head 16 fora-cutting tool.

At the loading station there is a'somewhat shorter extension 17constituting a table or platform to'facilitate removal of the finished fwork piece and the placing of a new work 18, this "tool head beingadapted to receive a facing tool and being supported'on an arm 19secured on a rock shaft 20 jou'rnaled in a bearing 21 (see Figs. 3 and9), which bear- I ing is adjacent the top of the frame member 11 inwardof the slide support l land at one side thereof, and supports the-rockshaft so that the tool head 18 will swing in a plane at right angles tothe path of'movement ofv the tool slide 15.

The mechanism for operating the tool heads of the several stations atrelatively high speed when the tools are approaching or receding fromthe work, and at relatively low speed While the tools are cutting, andthe means whereby the speed change is antomatically effected, will besubsequently explained.

The frame member'll is provided with an outer flanged top portion 11 towhich the cover 12 is designed to be bolted, this portion being annularin contour, though interrupted at the working stations and forming acarry off the cutting lubricant (see Fig. 5). Just beneath the flangedtop portion 11 the frame member 11 is provided with a transverse headportion or partition 11 which extends horizontally inward gutter totoward the center and terminates'in a cen-- tral upright hub-likeportion or column, partly located beneath the head or partition 11' inthe form of a, depending skirt 11,- and partly above the partition, thispart being designated 11-and constituting. a centering means for therotary spindle carrier and assisting in the support of the drive shaftanda sleeve mounted thereon, as will be detail views. Y

' scribed shortly.

The partition or transverse head 11 of the frame member 11 is providedinside ,the outer top portion 11 with an upstanding annular track orguide-way 11 for the spindle carrier. 'This guide-way. is clearly shownin Figs. 3 and 5, and some of the de- Supported on this guide-way torotate about a vertical axis is a spindle carrier'22 having an outerannular portion shaped to engage the top of the guide-way 11 and pro'vided adjacent the center with a hub .22

which is centered on the upstanding hub portion 11-of the transversehead or partition 11 of the frame member 11 through the medium ofa/tapered centering ring 23 pressed down againstthe inner tapered faceof the spindle-carrier hub 22 by a nut 24 screwed is indexed or movedstep by stepto shift the work spindles successively to the Idiiierentwork and-"loading. stations, and the devices for locking-the spindle"carrier. and holding it firmly against movement between"its 90 indexingmovements will be explained shortly. But 'itmay be noted in passing,that the horizontal and radial'jarrangement The iiianner in which thisspindle carrier of the. tool slides and work spindles does awaywith'the'flnecessity of-a large'central tool slide supporting column,required with vertically arranged tool .'slides .andwork spindles.

The .machine is provided with a main op crating shaft 27 which extendsvertically and centrally of the machine fromgtop to bottom thereof. Thisshaft, which isdriven at a constant high speed may; be belt driven ormotor driven in any desired-marinem-but, adirect motor drivcispreferred, in which event a vertical motor, (not shown) willzbe mountedin the center on thest'ationary top" or cover member 12 directly abovethe shaft 27 and with its shaft vertically disposed and .15

27 is rotatably supported by the top or cover f 12, and at its lower endis journaled ina" "1 casting 28 supported by and secured-t0 the :f I 1center of the base 10, the latter having a'well' 1O into which. thelower part of the shaftextends, for a purpose to be subsequently coupledto the driving shaft 27. The shaft explained.

The shaft 27 is provided with a clutch 29 (see Fig. 5) which controlsthe work spindle drives. Though any suitable type of clutch maybe"employed, a friction diskclut'ch is preferred." This clutch, which isautomatimultiple spindle chucking machineslhavi'ng;

cally operated in the manner hereinafter described, is operated by aclutch shifting lever 29, pivotallysupported at 29" ona stationarymember or bracket 30 through which the shaft extends and is journaled asshown in Fig. 5, the bracket being secured to the lower part or'skirt 11of the column of the casting member 11. This clutch shifting lever 29engages with a clutchfshifting member 29 keyed and slidablymounted onthe outer member of the clutch 29, and having a conesshaped lower endwhich'fwillact as a brake -when by the disengagement of the sleeveisprovided with a centralgear 32,

constituting a driving gear for the work spindles E25. 'lhree geartrains :are provided for simultaneously :operating three of the.

four work spindles wliiclrare at the work stations, the fourth spindleat'theloading station, being then idle, and each of these'trainsincludes a gear 32 '(see upper part of Fig. 5i mounted onthebottom of a ve'rtical shaftindieated at 32", which shaft is supported bythe cover 12 and is provided at its.

outer endabove'the eo ver-wvithja gear 32.

meshing with a gear 32 at the top of a shaft similar to shaft 32", andlikewise supported by the cover-12, this-shaft being provided at itslower end with a gear. 32

The gears 32? of' the three gear trains arefadapted to engage and rotateadditional spindle driving parts which are-mounted on and rotate Withthe spindle carrier22. Thesev partsrarrled. by the spindlecarrierinclude' -;gea'rs 33, one associated with each working spindle 25and adapted to roll intoand out of driving engagement with the gears 32,

. as the spindle carrier is indeXed. These drivenby the central gear,32, the arrange- 45.

gears 33' are mounted on the upper ends of vertically disposed shafts33% each rog bl supported. by the spindle carrier .22 alongside one ofthe work spindles 25,, and each'in-this. instance being provided witha-worm 33 (see left hand side of Fig.

' 5) engaging-and adapted to-rotate a-worm wheel 33 (see righthand 'sideof Fig.

secured to the corresponding work spinfeed units located inside theframe member 11, just inwardly with respect. to the dle 25.- e As beforestated, there are] three gear trainslcomposed of the parts 32 to 32",all

ment of these gear trains being apparent from Fig. 2,-and it will beseen also thatat the start of the indexing movements thegears' 33niovable with the spindle carrier' roll out 0t engagement with the gears.32 and just before thefcoinpletion of the indexing movement the gears33 associated with three of the working spindles roll into .inesh withthe gears 32 of the three gear trains referred to, so as to establishdriving relationship with the work spindles-which are in line with, oropposite the work' stations. Likewise it will be understood thataftereach indexing moveinent and when the clutch 29 is thrown in, thethree work spindles atthe Work stations will be simultaneously rotatedata constant speed by the described spindle driving mechanism, but'thespindles may be driven at 5 different speeds by changing the ratio ofthe pairs ofgears 32 and32 of the three gear 1)..1 with special teethhaving no flat on their outer edges or peripheries in order that theywear-e4 trains. The pairs of gears 32 and 32 which :may be termed changegears, are placed outside of the cover 12 so that they may be readilyreplaced with gears ofa-diiferent ratioin order that the speed of thework spindles may be varied if desired. I

It might be here stated that the vertical shafts 33 associated with.the'work spindles and constituting a part of the spindle driv--lllOYQl'llQlltSOftlle spindle carrier. The gear i,

" and and the gears '34: and 35 are cut may roll into n esh properly.

Takingup next the means for operating and controlling the tool headsatthe different work stations, it will be recalled that the tool 'headsiare'given a relatively slow feeding movement, i. c. When the toolsare'eut- V tin the tools are approaching with theiwork prior to the actualworking operations and while they are receding from the work after thecompletion of the cutting operationsorwork thereon. The mechanism forshifting the tool heads at the relatively fast and relatively slowspeedsand for effecting the change froin'one'speed to the other, andforotherwise controlling the movements of the tool heads will nowbeexplained.

andarelatively fast-movement when p Associated with and located at thediffer- 1 ent workstations are what may be termed tool slide supports14. The relative arrange ment of the feed units is very clearly seenfrom Fig. 4 as-well as theirariangement 'with respect .to the indexingunit.

Each' feed unit includes a barrel type .drum'36adapted to rotate about ahorizontally and radially disposed axis, the axesof I ing position. Eachdrum 36 is supported in bearings of a feed unit-fixture 37, eac hfixt-ure beingin 'thferform of a casting supported on the base 10 of theframe (see Fig.

7) and comprising a bottom portion 3.7 .resting on and'secured to anappropriate portion of the base 10 and upright end .portions or webs 3Tterminating at the top in bearings 37? in which the drum is journaled..Each

fixture 37 supports in addition to the drum.

manner to the tool head so that the movement of the slide .38 which .isactuated by the drum will be imparted to *the .tool' head 15.

4 At the outer face of the drum there is a.

face cam 39 (see particularly Fig. 8), and this face camfisengaged by aro1ler'39 on an arm '39 secured 'to the rock shaft 20, which shifts the.facin ing one of the two too heads at each work station as alreadyexplained. Obviously as the drum 36 is rotated through a completerevolution the tool slide 15 will be, given one complete cycle of inwardand outward sliding movement, and thetool head 18 will be moved throughone, complete cycle of rocking movement toward and from the work piece.'It will be apparent also, that the rates at which the two tool heads aremoved will depend upon the speed of the drum 36 and the changeable facecam 39.

Forrotating the drum the latter is pro vided at its inner end with agear 40, which is engaged by a driving pinion 41, best shown in Figs 9and 10,this pinion being located beneath the drum and somewhat-to theside of thefixture 37. As will be .observed from Fig. 9 the pinion 41 issecured to a shaft 41 on which is keyed an intermediate slidable clutchmember 41 adapted when shifted in one direction to be positivelyclutched to a relatively slowspeed driving member 41 and when shifted inthe opposite direction to a relatively high speed driving member 41. Theslow speed, driving member 41 is in the form of a shaft which receivesthe end of the shaft 41, and both shafts are journaled in bearingscarriedby the upright ends or webs of the .35 which engages a shaft 35journaled in the head 11 of the corresponding feed unit fixture 37. Theslow speed driving members 41 of the different feed units are operatedby the work spindle driving shafts 33 and therefore through the gears34'on the lower ends of these shafts 33 and'the gears 35 which aredriven by the gears 34 as previously eX-- plained, roll into and out ofengagement with the gears 34 when the work spindle carrier is indexed.

As will best be seen by reference to Fig. 3

and Fig. 9 the gear 35 associated with each feed unit is mounted on ashort vertical shaft 35 carried by the head or partition 11 of themember 11, and beneath this partition this shaft is provided with apinion gear 35 on a vertical framegmember 11. and in the base of theframe'as clearly shown in Fig. 9. -Near its lower end this h ft 3 h s ar 3 ut tool head 18 form on it (see Fig. 9) and this worm is engaged bya worm' wheel 42-on a horizontal shaft 42 extending toward the front ofthe feed unit alongside and beneath the associated drum 3Q. I 'A' set ofcompounded change gears is ;.uti1ized to transmit movement from thisshift 42 tothe relatively low s eed driving member 41, and i tliisjsetinclu es a gear 42" (see particularly Fig. 9) on the shaft 42 two gears42 and 42 which rotate in unison, and a gear 42 mounted on the slowspeed driving member 41, which as before stated, is adapted to bepositively clutched to the intermediate clutch member 41 The gears 42and 42 are carried by an adjustable arm-42, shown in Figs. Sand 9. Thusit will be seen that when clutch member 41" ,is shifted to the left asthe same is viewed in Fig. 9, the drum 36 of the feed unit will beturned at the relatively low speed which is utilized for the feed of thetools when working.

The relatively high speed is imparted to I the pins 43"" supported inthe lower part of the base casting lO'near, the center the reof, thesepinions and the parts associated therewith being in the well 10? alreadyreferred to. The idler pinions 43 drive an ,internal gear 43 which isjournaled on the lower end of a downwardly extending hub 28 of thecasting 28 already referred to, which casting is carried by the centralpart of thebase 10 and formsabearing for the lower part of the maindrive shaft as pre.-- I

viously explained. The internal gear 43 has formed on the upper partthereof a bevel gear- 43? which is engaged by four equally spaced bevelgears, three of such gears 44 being utilized for imparting therelatively quick motion tothe feed drums and therefore to the toolslides, and to the fourth bevel gear designated 45 forming .a'

part of the indexing drive mechanism,

shown in Fig.- 5. 1

By reference particularly to Figs. 5,9 and 10 it will be observed thateach'of the gears 44is mounted on the inner end of a" horizontally andoutwardly extended shaft 44 journaled in the base casting '10, and

that on theouter end of the shaft 44 there {I v is provided a spur gearpinion 44 Figs. 8, 9 and 10) which meshes with an idler gear 44supportedon a pin 44 on see" l 1:25.

the feed unitfixture 37 ,this'gear 44 mesh- I vi 'l'gwitha gear 44forming a part of the relatively high speed driving member 41 adapted tobeclutched to the intermediate

